#  关系运算符  > < >= <= == !=   主要用于比较大小,返回的结果是bool值,表达式成立返回True,表达式不成立返回False
a = 23
b = 45
c = 23
print(a > b)  # False
print(a < b)  # True
print(a == b) # False
print(a != b) # True
print(a == c) # True